Benwin 2-piece Sonixer USB-D 2.0 MultiMedia Speakers (Black) Benwin 2-piece Sonixer USB-D 2.0 Digital USB MultiMedia Speaker System General Features: Black color Slim, space saving flat panel design USB Bus powered (NO adapter or Sound card needed) Built-in Class-D Digital Amplifier 6.5 foot USB cable length Full-range drivers Benwin Neomanic microtweeters Plug and Play Ideal for desktop gaming and notebooks computers! Compatible with Windows and Mac operating systems with USB ports